为企业最高层决策者提供企业战略决策信息的物流信息系统层次为（）

A.战略层

B.战术层

C.操作层

D.知识层

During counterflooding to correct a severe list aggravated by an off-center load, your vessel suddenly takes a list or trim to the opposite side. You should（）.

A.continue counterflooding in the same direction

B.continue counterflooding, but in the opposite direction

C.immediately stop counterflooding

D.deballast from the low side